Common C++ RTP is an experimental threadsafe RTP
stack for use with Common C++. It uses a service
thread to both schedule outgoing packets and
organize arriving packets. Queued lists of packets
are maintained both for sending and receiving, and
packet payloads can be mixed such as for passing
RTP telephony events. Recent builds of GNU ccRTP
are also available for building handheld softphone
clients using Open Embedded.

CUPS is a standards-based printing system for Mac OS X and other Unix-like operating systems. It provides the System V and Berkeley command line interfaces, and uses the Internet Printing Protocol ("IPP") as the basis for managing print jobs and queues. The Line Printer Daemon (LPD) Server Message Block (SMB), and AppSocket (a.k.a. JetDirect) protocols are also supported with reduced functionality. CUPS adds network printer browsing and PostScript Printer Description ("PPD") based printing options to support real world printing.

The CONFIG:: Perl modules are highly useful in connection with mod_perl CGI scripts. It caches files to speed up file reading. It's possible to configure the module to remove comments (several types), trailing blanks, and empty lines, or to do other useful things only once.

Configuration enhances the java.util.Properties class. It offers configuration variables that allow factorization of parameters. It also offers enumerative properties or randomly chosen properties and allows you to finely parameterize the access to resource files (from disk, jar file, or url).

The Coral Tree Library Set includes modules for basic operating system abstractions, general purpose templates and classes, well behaved application modules, platform independent builder, thread abstraction, network abstractions, event/window system abstraction, and a widget set for the event/window system abstraction. The library set now also includes the distributed shared memory modules.

CoreLinux++ is an initiative to normalize methods and conventions for OOA/OOD/C++ development for Linux, materialized in a set of Open Source C++ class libraries to support common patterns and frameworks and exploit the C++ standards.

The CoreLinux++ Abstract Framework Library (libclfw++) is a library meant to facilitate the development of commonly used frameworks for C++ applications. It does this by providing common classes and the abstractions of frameworks for extension.

libclfll++ takes advantage of the abstract Library Load framework in the CoreLinux libclfw++ library by providing management of loading Linux shared libraries. Application developers define function objects as wrappers and can then dynamically load the functions. It is very useful for implementing a framework for plug-ins.

Crypt::Rijndael is an XS-based implementation of the algorithm for the Advanced Encryption Standard, Rijndael. The main Rijndael code is in C, as is the code that applies the modes of operation, making it reasonably fast.